Abstract
This paper presents the active control scheme for
buffet load attenuation on the wings of advanced commercial
aircraft prototype, built under (3AS) European project in
Politecnico di Milano. Finite element commercial software,
MSC/NASTRAN provided the analytical model of the forward
swept wing named as X-DIA. In house software, MASSA,
provided the aerodynamic and structural coupling to formulate
the Aeroservoelastic model, it excited the structural modes of the
wing with buffeting loads, applied as input to the model. Active
control scheme has been developed to suppress the excited
structural vibrations in the bandwidth range of four control
surfaces located on the wing: first and second order algorithms
with variable step size were used to minimize the objective
function based on the controllability and observability of the
system. Dedicated robustness analysis has been performed
numerically and experimentally for the uncertainties in the
actuators system and accelerometers located on the wing.
Numerical investigation on the buffet load attenuation system
was validated and supported by dedicated wind-tunnel test
campaign at De Ponte wind-tunnel, Politecnico Di Milano. The
results demonstrated the considerable attenuation of the buffet
loads and effectiveness of the proposed system.
Sheharyar Malik, Sergio Ricci, Daniele Monti, Luca Riccobene. (2018) Buffet Load Alleviation System for Advanced Commercial Aircraft, Journal of Space Technology , Volume 8, Issue 1.
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